Description: Starting in Oracle 9i, you can use the case statement within an SQL statement. It has the functionality of an IF-THEN-ELSE statement.

The syntax for the case statement is:

'expression' is optional. It is the value that you are comparing to the list of conditions. (ie: condition_1, condition_2, ... condition_n)

'condition_1' to 'condition_n' must all be the same datatype. Conditions are evaluated in the order listed. Once a condition is found to be true, the case statement will return the result and not evaluate the conditions any further.

'result_1' to 'result_n' must all be the same datatype. This is the value returned once a condition is found to be true.

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